New NEX5 T

It won't have IBIS. Alpha SLT has IBIS because the body is big. M43 has IBIS because the sensor is small. The NEX body is too small and sensor too big to have IBIS, plus most of the Sony lenses are already stabilized.

If they release a 5T, this would indicate more alphabet soup like the C3, F3, etc. that are largely the same camera with some features shuffled around. I would imagine it would be essentially a 5R (touch screen and PDAF) but with an integrated flash or some other feature.